David – React, Node.js, AWS

An AI-powered career acceleration platform that helps job seekers land better opportunities faster. It combines cutting-edge large language models with intuitive tools to automatically generate tailored resumes, cover letters, follow-up emails, and even job applications. This company goes beyond job applications by offering smart interview prep, career coaching, learning paths, and personal branding tools, all optimized to match user goals and skillsets.

• Designed and built the entire platform's architecture, including frontend (Next.js App Router), backend (Server Actions, Prisma), and database (PostgreSQL via Supabase).
• Developed secure and scalable authentication flows using NextAuth.js, integrating email/password, Google, and LinkedIn login providers.
• Engineered a modern, AI-powered resume builder with live preview, section customization, and dynamic templates.
• Built advanced features for AI-assisted job applications: job description scraping from URLs; tailored resume, cover letter, and follow-up email generation via LLMs; auto-fill and direct application submission on company websites.
• Implemented AI-generated interview prep with mock questions and voice-based interactions.
• Developed innovative features for LinkedIn profile optimization and daily personal branding post generation using user data.
• Integrated a subscription system with usage limits and premium feature gating.
• Implemented job tracking, goal-setting, and milestone progress dashboards for users
• Built the upcoming B2B bulk resume processing engine, enabling companies and recruiters to optimize large volumes of resumes.
• Architected React Query-powered data fetching, with server actions for seamless SSR/CSR hybrid flows.
• Managed infrastructure and deployment, including GitHub Actions for CI/CD, Supabase for real-time data and auth, Netlify for front-end hosting, and Future AWS integrations for scale.
• Conducted rigorous QA, wrote tests, and debugged core logic around AI limits, data syncing, and auto-apply logic
• Defined roadmap, user personas, and product vision aligned with long-term monetization strategy.
• Crafted onboarding flows and content plans for B2C growth and B2B expansion.

A decentralized digital licensing platform that allows creators and businesses to securely upload, license, and monetize digital assets such as music, code, video, and research. The platform simplifies intellectual property rights management through customizable licensing, metadata tagging, and real-time usage tracking. The product was significantly enhanced during the XRP Ledger Residency Program in Paris, where the team implemented on-chain licensing logic and decentralized identity integrations and also placed 2nd at the Encode x Lightlink Hackathon (Q1 2024), gaining recognition for its innovation in IP licensing and Web3-native creator tools.

• Designed and implemented smart contracts on the XRP EVM Sidechain to manage digital rights and licenses.
• Built a full-stack decentralized licensing platform enabling creators to tokenize and monetize digital content.
• Developed responsive front-end interfaces using React, integrating Web3 wallet support for seamless transactions.
• Integrated decentralized storage and metadata tagging to support NFT-based asset licensing.
• Built dashboards for creators to manage assets, view analytics, and track on-chain license revenue.
• Implemented secure file upload and custom metadata parsing for diverse digital content types.
• Led contract deployment and versioning pipeline with focus on reliability and upgradability.
• Integrated AI-powered search and tagging for enhanced discoverability of licensed assets.
• Contributed to the project’s evolution during the XRP Ledger Residency in Paris and optimized it post-Encode x Lightlink Hackathon, where it secured 2nd place.

A hierarchical-deterministic (HD) crypto wallet suite - comprising a desktop application, backend services, and a custom hardware device. It implements a four-factor, multi-signature authentication system (secure MCU, touchscreen, biometric, carbon-key), eliminates seed-phrase risks with seedless recovery, offers integrated trustless inheritance via Iron Mountain-backed carbon-key custody, and supports multi-chain assets and tokens with a polished, secure UX.

• Developed and maintained the full-stack architecture across the company’s desktop app, backend services, and hardware wallet interface.
• Engineered secure HD wallet logic with blockchain integration for Bitcoin, Ethereum, and multi-asset support.
• Built the front-end interface using Electron + React, optimized for hardware wallet interactions.
• Designed and implemented a custom API layer for device communication and transaction signing.
• Created reusable component libraries and modular UI systems for future Keevo product lines.
• Wrote unit, integration, and end-to-end tests to ensure wallet security and functional reliability.
• Debugged cryptographic edge cases in private key handling and secure memory storage.
• Contributed to seamless firmware integration between the desktop app and a hardware device.
• Participated in code reviews and architecture planning with the hardware, cryptography, and design teams.
• Set up CI/CD pipelines via GitHub Actions, enabling automated builds, tests, and deployments across environments.
• Debugged AWS Lambda webhook trigger issues.

A luxury NFT marketplace that bridges the physical and digital worlds by linking premium real-world items with authenticated digital assets. It enables users to mint, verify, and trade Luxury NFTs that correspond directly to actual high-end goods through a user-friendly marketplace interface for discovering, viewing, and sharing authenticated digital collectibles.

• Played a key role in building a luxury NFT marketplace that links premium real-world items with digital ownership;
• Developed responsive and intuitive interfaces for web and mobile platforms, ensuring seamless product discovery and interaction.
• Integrated Robonomics smart contracts to enable minting, transferring, and verifying physical asset NFTs using decentralized IoT cloud infrastructure.
• Implemented QR/NFC scanning features in web and mobile apps to authenticate real-world items and match them with their corresponding digital tokens in real time.
• Closely collaborated with backend and blockchain teams to deliver a polished, secure, and immersive user experience from first scan to on-chain ownership.
• Designed and implemented web and mobile applications' user interface and user experience (UI/UX), fixed bugs or UI issues reported during testing or by users.
• Wrote clean, efficient, and maintainable code using Typescript, CSS, Angular, and Flutter.
• Built responsive and accessible designs that work seamlessly across different devices and browsers.
• Collaborated with backend developers, designers, and product managers to deliver cohesive features.
• Optimized application performance and ensured fast load times.
• Wrote unit and integration tests to maintain code quality.
• Implemented APIs and integrated with backend services to fetch and display dynamic data.
• Participated in code reviews, contributed to team knowledge sharing, and stayed updated with the latest front-end technologies and best practices.